When we replace or upgrade the ventilation on your roof, we only use Lomanco®. After decades in roofing across Central Kentucky, we’ve seen how attic ventilation directly impacts roof life, indoor comfort, and energy bills. Lomanco consistently delivers the durability, performance, and support our customers deserve—and that’s why it’s the only ventilation brand we install.

A Brief History of Lomanco: Built on Innovation
Founded in 1946, Lomanco began with an adjustable louver invention and has grown into one of America’s premier ventilation manufacturers. Today, Lomanco operates from Jacksonville, Arkansas (with additional facilities to serve the West), and continues to focus exclusively on ventilation solutions for residential and light‑commercial roofs. Their long record of product development—from classic Whirlybird® turbines to modern Omni® Series ridge vents—is a big reason professionals like us trust them.
Key Milestones
- Established in 1946; continuous focus on ventilation innovation
- Headquarters and engineering/testing in Jacksonville, AR
- Iconic product families: Whirlybird® turbines, Omni® Ridge Vents, Deck‑Air™ intake vents, static roof vents, and more

Why Ventilation Matters (and Why Your Roof Needs It)
A balanced system of intake + exhaust keeps your attic dry and temperate year‑round:
- Helps prevent moisture buildup that can lead to rot, mold/mildew, and insulation degradation
- Reduces ice dam risks in winter and heat loading in summer
- Extends the service life of shingles and other materials
- Supports manufacturer warranty requirements and building‑science best practices
Lomanco’s product line makes building that balance straightforward—pairing reliable intake (e.g., Deck‑Air™ or soffit) with high‑flow ridge exhaust (Omni® Series) sized to your home’s Net Free Vent Area (NFVA).
Product Quality You Can Feel on the Roof
Engineered airflow: Omni® ridge vents use aerodynamic baffles and internal weather filters to move air efficiently while resisting wind‑driven rain and snow.
Materials that last: UV‑stable polymers, corrosion‑resistant fasteners, and robust designs mean the vents hold up under Kentucky’s sun, wind, and seasonal swings.
Proven warranties:
- Whirlybird® turbines: lifetime, transferable warranty (residential)
- Many Omni® Series ridge vents: limited lifetime warranty
- Powered vents (select models): strong limited warranties

Third‑party approvals: Many Lomanco models carry certifications/approvals such as ICC, CSA, UL, and wind‑uplift ratings—useful for code compliance, inspections, and insurance documentation.
Hands‑On Training—And Our Team Is Lomanco‑Certified

We don’t just install vents—we invest in manufacturer training so your system is done right the first time. Lomanco offers hands‑on classes hosted with distribution partners and trade events. Our Grand Rising Exteriors reps are Lomanco‑certified, and we refresh our training regularly to stay current on installation techniques, ventilation math (intake vs. exhaust), and best practices for complex roofs.
Why We Use Only Lomanco for Ventilation
- Consistency: Matching intake/exhaust products from the same system provider simplifies design and helps ensure balanced NFVA.
- Performance in real life: We’ve installed thousands of linear feet of Omni® ridge vents and countless static/turbine units—Lomanco holds up and performs.
- Support that backs us (and you): Easy‑to‑access install literature, videos, and technical support, plus clear warranty documentation.
- Great fit for Kentucky homes: From steep hips to multi‑level roofs, Lomanco’s portfolio gives us the right option for each architectural challenge.

Our Installation Standards (What You Can Expect)
- We evaluate intake first—proper soffit or deck‑level intake is critical to any exhaust vent working correctly.
- We specify the correct NFVA and keep exhaust all at one level to prevent short‑circuiting (mixing roof‑level exhausts at different elevations can pull air from exhaust instead of intake).
- We use manufacturer‑approved fasteners and follow cut‑width and ridge prep guidelines for ridge vents.
- We document installs with photos for your records, and we register/retain product info for warranty support.
Common Lomanco Solutions We Recommend
- Omni® Ridge Vents (OR‑4 / PRO‑4 / Lo‑OmniRoll® / OmniRoll®): High‑flow, shingle‑over ridge ventilation in stick or roll formats
- Deck‑Air™ Intake: Shingle‑over intake option when soffit intake is limited or absent
- Whirlybird® Turbines: Durable, maintenance‑friendly exhaust for specific roof designs
- Static Roof Vents (Slant‑Back, etc.): Targeted exhaust on small sections or architectural constraints
The Bottom Line
When you hire Grand Rising Exteriors, you’re getting manufacturer‑trained, Lomanco‑certified installers using one trusted brand for every ventilation component. That consistency, plus our workmanship standards, delivers the performance and peace of mind you expect.
If your roof needs ventilation upgrades—or you want a no‑pressure attic ventilation assessment—reach out. We’re happy to help.














